scpEventOverrides.js

/*	
This module contains functions that are used by SCPper Chrome extension to override default behaviour on SCP wiki and its regional branches
*/

function sendMessageToScpper(message) {
	var messageEvent = new CustomEvent('ScpperExternalMessage', {detail: message});
	document.dispatchEvent(messageEvent);	
}

// Default wrapper for overriden functions
function scpperDefaultHandlerOverride(listener, setCallback, message, args) {    
    var oldCallback = setCallback(function (a) {
            // Check for errors
            if(!WIKIDOT.utils.handleError(a))
                return;
            try {
                // Call original callback
                oldCallback(a);
            } finally {              
                // Send message home 
				sendMessageToScpper(message);
            }
    });
    try {
        listener.apply(null, args);
    } finally {
        setCallback(oldCallback);
    }
}

// Override for forum page clicks
function scpperForumChangePageHandler(a) {
    // Unfortunately original handler uses anonymous inline function for a callback, 
    // so we're gonna have to override it completely
    OZONE.ajax.requestModule(
        "forum/ForumViewThreadPostsModule",
        {
            pageNo:a,
            t:WIKIDOT.forumThreadId,
            order:($j("#thread-container").hasClass("reverse"))?"reverse":""
        },
        function(b){
            if (!WIKIDOT.utils.handleError(b))
                return;
            $j("#thread-container-posts").html(b.body);
			sendMessageToScpper({text: "FORUM_POSTS_UPDATED_EXTERNAL"});
            OZONE.visuals.scrollTo("thread-container");            
        }
    );
}

// Override for user info dialog click
function scpperUserInfoDialog(userId, aUserName) {
    scpperDefaultHandlerOverride(WIKIDOT.page.listeners.userInfo, function(f) {
        var res = WIKIDOT.page.callbacks.userInfo;
        WIKIDOT.page.callbacks.userInfo = f;
        return res;}, 
        {text: "USER_INFO_DIALOG_EXTERNAL", userName: aUserName, userId: userId},
        [userId]);
}

// Override for history button click
function scpperHistoryButtonClick() {
    scpperDefaultHandlerOverride(WIKIDOT.page.listeners.historyClick, function(f) {
        var res = WIKIDOT.page.callbacks.historyClick;
        WIKIDOT.page.callbacks.historyClick = f;
        return res;}, 
        {text: "HISTORY_MODULE_LOADED_EXTERNAL"});
}

// Override for UpdateList button in history module
function scpperHistoryModuleUpdateListButtonClick() {
    scpperDefaultHandlerOverride(WIKIDOT.modules.PageHistoryModule.listeners.updateList, function(f) {
        var res = WIKIDOT.modules.PageHistoryModule.callbacks.updateList;
        WIKIDOT.modules.PageHistoryModule.callbacks.updateList = f;
        return res;}, 
        {text: "ACTION_AREA_UPDATED_EXTERNAL"});
}

// Override for pages of revision list on historyModule
function scpperHistoryModuleUpdatePagedList(a) {
    scpperDefaultHandlerOverride(updatePagedList, function(f) {
        var res = WIKIDOT.modules.PageHistoryModule.callbacks.updatePageList;
        WIKIDOT.modules.PageHistoryModule.callbacks.updatePageList = f;
        return res;}, 
        {text: "ACTION_AREA_UPDATED_EXTERNAL"},
        [a]);
}

// Override for pagerate button click
function scpperPageRateButtonClick() {
    scpperDefaultHandlerOverride(WIKIDOT.page.listeners.pageRate, function(f) {
        var res = WIKIDOT.page.callbacks.pageRate;
        WIKIDOT.page.callbacks.pageRate = f;
        return res;}, 
        {text: "PAGERATE_MODULE_LOADED_EXTERNAL"});
}

// Override for show people who rated this page button
function scpperShowVotersButtonClick(a, b) {
    // Apparently original function doesn't use arguments, but still
    scpperDefaultHandlerOverride(WIKIDOT.modules.PageRateModule.listeners.showWho, function(f) {
        var res = WIKIDOT.modules.PageRateModule.callbacks.showWho;
        WIKIDOT.modules.PageRateModule.callbacks.showWho = f;
        return res;}, 
        {text: "ACTION_AREA_UPDATED_EXTERNAL"},
        [a, b]);    
}

// Override for forum loading page for a specific post
function scpperForumLoadPostOverride(post_id) {
    OZONE.ajax.requestModule(
        "forum/ForumViewThreadPostsModule", 
        { postId: post_id,
            t: WIKIDOT.forumThreadId,
            order: ($j("#thread-container").hasClass("reverse")) ? "reverse" : ""
        }, 
        function(c) {
            $j("#thread-container-posts").show();
            if (c.status == "no_post" || !WIKIDOT.utils.handleError(c)) {
                return
            }
            $j("#thread-container-posts").html(c.body);
			sendMessageToScpper({text: "FORUM_POSTS_UPDATED_EXTERNAL"});
            OZONE.visuals.scrollTo("thread-container-posts");
        }, 
        null, 
        {ignoreCodeZero: true}
    );
}

// Override a button interacting with action area
function overrideWikiBottomButton(id, onclick) {
    // This button is handled somewhere deep in the wikidot core, so we just swap it with our own button and our own handler    
    var button = document.getElementById(id);
    if (!button || (button.style.display == "none"))
        return;
    var myButton = button.cloneNode(true);
    myButton.id = "scpper-"+id;
    button.parentElement.insertBefore(myButton, button);
    button.style.display = "none";
    myButton.setAttribute("onclick", onclick);
    // button.setAttribute("onclick", onclick);
    var tip = document.getElementById(myButton.id+"hovertip");
    if (tip)
        OZONE.dialog.hovertip.makeTip(myButton, {context: tip, delay: 700, valign: "center"});
}

overrideWikiBottomButton("history-button", "scpperHistoryButtonClick();");
overrideWikiBottomButton("pagerate-button", "scpperPageRateButtonClick();");